Investigating the effect of a stress-based uniaxial anisotropy on the magnetic behaviour of La_0.7Sr_0.3MnO₃ elements

We investigate the interplay between shape anisotropy and a stress-based uniaxial anisotropy on the magnetic domain structure of La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub> nanoelements as a function of aspect ratio, using micromagnetic simulations. We show that a direct competition between the anisotropies gives rise to high energy multi-domain flux closure configurations, whilst an alignment of the anisotropies can modify the effective element dimensions and act to stabilise a single domain configuration. Our results demonstrate the ability to control the spin state of La<sub>0.7</sub>Sr<sub>0.3</sub>MnO<sub>3</sub> elements in addition to tailoring the domain wall width by controlling the anisotropy of the material, which is key for spintronic applications that require a high spin-polarization and stable magnetic configurations

Albanian Immigrants\u27 Experience and Attitude toward Health Care in Albania versus the USA

Purpose: To describe the experiences and attitudes of Albanian immigrants toward health care in Albania versus the United Stated (USA). Method: A cross-sectional descriptive survey using venue sampling was administered at the Albanian Festival in Worcester on June 5-7, 2015. The data was entered and analyzed using SPSS. Results: There were a total of 146 subjects eligible for analysis. Most subjects were female (52.7%) and the mean subject age was 41.6 with a range of 18-77 years old. Subjects moved to the USA at a mean age of 28.8 years with a range of 1-66 years old. Subjects have lived in the USA for a mean of 12.9 years, with a range of 3 months to 28 years. Categorical response items comparing health care in Albania versus the USA were statistically significant in favor of the USA health care system regarding comfort seeking care, care worth money, receiving preventative care, and having good communication with the doctor. Subgroup analysis of males vs. females showed a significant finding only on females receiving more preventative care. Continuous response items comparing health care in Albania versus the USA were statistically significant in favor of the USA health care system regarding the patient liking care received and trusting the doctors. Content analysis of the open-ended comments showed positive and negative perceptions of both health care systems. Conclusions: Our results show that Albanian Immigrants have an overwhelming positive experience and attitude toward the USA health care system in all categories including comfort seeking care, care being worth the money, having good communication with the doctor, trusting the doctors, receiving preventative care, and liking care received. These finding are important because they show that even though Albanian immigrants are exposed to under-funded and corrupt medical care in Albania, the majority does not allow this experience to influence the interaction with USA health care professionals. The findings from this study are applicable to the clinical setting in the USA and some recommendations can be made to USA health care providers about how to best approach Albanian immigrant patients.https://escholarship.umassmed.edu/capstones/1001/thumbnail.jp

Prevailing Arguments and Types of Conclusions of Parent\u2013Child Argumentation

This chapter examines the types of arguments used most often by parents and children and the different types of conclusions of their argumentative discussions. The conceptual tool adopted for the analysis is based on the integration of the pragma-dialectical ideal model of a critical discussion (van Eemeren & Grootendorst, 2004) with the Argumentum Model of Topics (Rigotti & Greco Morasso, 2019). The integration of these two tools of analysis permits to reconstruct the inferential configuration of the arguments used by parents and children and to identify the types of conclusions of their argumentative discussions. Exemplary argumentative sequences that bring to light the results obtained through the qualitative analysis of a larger corpus of argumentative discussions between parents and children are presented and discussed

Qualitative Description: A “How-To” Guide

This guide is based on multiple presentations we have given to doctoral students about the use of qualitative description (QD) and our own work using QD over the past 21 years. We were motivated to make this guide widely available due to the lack of adequate resources (manuscripts and textbooks) that cover QD. It is our hope that others will be open to this pragmatic approach, which is both creative and rigorous and can be useful for exploring phenomena from a qualitative perspective. Many published articles claim to use QD (e.g., approximately 3,600 in PubMed). However, guidelines for conducting a QD study are lacking. Kim et al. (2016) expressed a similar sentiment in their systematic review of studies that used QD. The lack of a rigorous systematic approach leads to inconsistencies in sampling procedures, inadequate sample sizes, and lack of theoretical or conceptual orientations to build knowledge. Research that uses QD is not intended to find underlying interpretive meanings or to describe the culture of a group; it is designed instead to describe the rich, truthful perspectives of those experiencing a specific and focused situation or phenomenon. The results of a QD study are expressed in common, easy-to-understand language. Therefore, it is especially useful when working with clinical populations, communities, and across different cultural groups. The QD approach provides rich description and makes an important contribution to knowledge development. We hope that this guide will become an essential reference for those interested in using this specific qualitative approach

Identifying canons in competitive light music for the Great Highland Bagpipe, 1947–2015

Competitions for players of the Scottish Great Highland Bagpipe are regarded by many pipers and enthusiasts as the pinnacle of the art form, though some pipers who participate in these competitions have identified a trend of repertoire stagnation within certain disciplines of competition. Focusing on the solo competitive 2/4 march, this article presents the premise and methodology used to study competitive solo and band piping. This article aims to present the groundwork for further research into canon formation within competitive piping by: identifying the methods by which musical canons are formed in genres outside bagpipe competitions; identifying how those methods may be compared and applied to the formation of canons of competitive bagpipe music; identifying the various canons of competitive bagpipe music between 1947 and 2015 by way of quantitative data collection and analysis; and comparing a canonical list of tunes against a list previously compiled by another scholar.Publisher PD

investigation of integrated organic rankine cycles and wind turbines for micro scale applications

Abstract The aim of this work is the investigation of the performance of an innovative biomass/wind energy integrated system for Combined Heat and Power (CHP) generation in small-scale applications. The system is based on an Organic Rankine Cycle (ORC) fed with biomass and a wind turbine (WT). The ORC and WT sub-systems operate in parallel to produce the required electrical energy and an auxiliary boiler provides thermal energy if the CHP output is low. A preliminary investigation is performed to define the proper size of the wind turbine. Afterwards, the analysis is focused on the integrated system. In particular, the application to the Italian residential sector is analysed. Results illustrate that hybridisation improves the global conversion efficiency, by reducing the biomass consumption and overcoming the intermittency of the wind source. When the wind source is significant, the ORC system can be switched off or operated at partial load

Analysis of multi-source energy system for small-scale domestic applications. Integration of biodiesel, solar and wind energy

The paper aims at analysing the energy performance of an innovative multi-source energy system for residential small-scale combined heat and power (CHP) applications. The integrated system is based on an Organic Rankine Cycle (ORC) fuelled by biodiesel, a wind turbine, and a photovoltaic unit. The application refers to the Italian residential sector. The ORC system operates in order to satisfy the thermal demand of domestic users while wind and solar based sub-systems work in parallel to increase the electric self-consumption rate. An auxiliary boiler provides thermal energy when the CHP thermal output is low. Furthermore, when the solar and/or wind sources are significant, the ORC can be switched-off or operated at partial load.A preliminary investigation is performed to define the proper size of the ORC unit. Afterwards, the analysis is focused on a multi-variable optimisation of the integrated system. In particular, the nominal power of the wind turbine and photovoltaic units have been found in order to guarantee a proper trade-off between electric self-consumed and surplus energy. Keywords: Biodiesel, Combined heat and power, Multi-source generation, Organic Rankine cycle, Solar, Win

Synthesis and Biological Characterization of a New Norbormide Derived Bodipy FL-Conjugated Fluorescent Probe for Cell Imaging

Background: Norbormide (NRB) is a selective rat toxicant endowed with vasoconstrictor activity confined to the rat peripheral arteries. In a recent work we used a fluorescent derivative of NRB (NRB-AF12), obtained by coupling the NBD fluorophore to the parent molecule via a linker, in order to gain information about the possible site of action of the unlabeled compound. We found that NRB-AF12 labeled intracellular organelles in both NRB-sensitive and -insensitive cells and we accordingly proposed its use as a scaffold for the development of a new class of fluorescent probes. In this study, we examined the fluorescent properties of a BODIPY FL-conjugated NRB probe (MC009) developed: (A) to verify if NRB distribution could be influenced by the attached fluorophore; (B) to improve the fluorescent performance of NRB-AF12. Methods: MC009 characteristics were investigated by confocal fluorescence microscopy, in freshly isolated rat caudal artery myocytes (FIRCAM) and in LX2 cells, representative of NRB-sensitive and insensitive cells, respectively. Main results: In both FIRCAM and LX2 cells MC009 stained endoplasmic reticulum, mitochondria, Golgi apparatus and lipid droplets, revealing the same intracellular distribution as NRB-AF12, and, at the same time, had both improved photostability and gave a more intense fluorescent signal at lower concentrations than was possible with NRB-AF12, which resulted in a better and finer visualization of intracellular structures. Furthermore, MC009 was effective in cellular labeling in both living and fixed cells. At the concentration used to stain the cells, MC009 did not show any cytotoxic effect and did not affect the regular progression of cell cycle and division. Conclusions: This study demonstrates that the distribution of fluorescently labeled NRB is not affected by the type of fluorophore attached to the parent compound, supporting the idea that the localization of the fluorescent derivatives may reasonably reflect that of the parent compound. In addition, we observed a marked improvement in the fluorescent properties of BODIPY FL-conjugated NRB (MC009) over its NBD-derived counterpart (NRB-AF12), confirming NRB as a scaffold for the development of new, high performance, non-toxic fluorescent probes for the labeling of intracellular structures in both living and fixed cells

Parameterized Compilation Lower Bounds for Restricted CNF-formulas

We show unconditional parameterized lower bounds in the area of knowledge compilation, more specifically on the size of circuits in decomposable negation normal form (DNNF) that encode CNF-formulas restricted by several graph width measures. In particular, we show that - there are CNF formulas of size $n$ and modular incidence treewidth $k$ whose smallest DNNF-encoding has size $n^{\Omega(k)}$, and - there are CNF formulas of size $n$ and incidence neighborhood diversity $k$ whose smallest DNNF-encoding has size $n^{\Omega(\sqrt{k})}$. These results complement recent upper bounds for compiling CNF into DNNF and strengthen---quantitatively and qualitatively---known conditional low\-er bounds for cliquewidth. Moreover, they show that, unlike for many graph problems, the parameters considered here behave significantly differently from treewidth

Intraocular pressure changes during femtosecond laser-assisted cataract surgery: A comparison between two different patient interfaces

Purpose. The aim of this retrospective cohort study was to evaluate intraocular pressure (IOP) changes during femtosecond laser-assisted cataract surgery (FLACS) using two different patient interface systems. Methods. 116 eyes of 116 patients scheduled for cataract surgery were divided into 2 groups: group 1 (61 eyes) and group 2 (55 eyes) underwent FLACS using Catalys Laser with fluid interface (liquid optics interface, LOI) and LenSx Laser with curved interface and soft contact lens (SoftFit), respectively. IOP was assessed using a portable rebound tonometer (Icare\uae) preoperatively, after docking, immediately after surgery, at one and seven days postoperatively. Results. In group 1, the mean IOP (\ub1SD) was 14.1 \ub1 0.4 mmHg before surgery, 33.2 \ub1 1.1 mmHg after docking, and 21.4 \ub1 0.9 mmHg immediately after surgery. In group 2, the mean IOP was 13.8 \ub1 0.4 mmHg before surgery, 24.2 \ub1 1.4 mmHg after docking, and 20.2 \ub1 1.2 mmHg immediately after surgery. After the docking procedure, a statistically significant increase in IOP from the baseline was found in both groups (p0.05) using both laser platforms. No intraoperative and postoperative complications were observed. Conclusions. FLACS suction phase resulted in a transient increase of IOP in both groups, especially with the LOI system, and it is probably related to the greater pressure of a suction ring and suction generated through the vacuum, independently from the effect of femtosecond laser itself